Valve for gas-burners.



No. 888,237. PATENTED MAY 19,1908.

H. S. HUMPHREY.

VALVE FOR GAS BURNEBS.

APPLICATION FILED JUNE 27. 1906.

W'itgessas: W

a m 1 Quid Mr Inventor.

UNITED STATES PATENT oFFioE.

HERBERT S. HUMPHREY, OF KALAMAZOO, MICHIGAN.

VALVE FOR GAS-BURNERS.

To all whom it may concern:

Be it known that I, HERBERT S. HUM

PHREY, a citizen of the United States, residing at Kalamazoo, county of Kalamazoo, State of Michigan, have invented. certain new and useful Improvements in Valves for Gas- Burners, of which the following is a specification.

This invention relates to im rovements in valves for gas burners. In t e use of gas burners lighted by pilots, serious explosions have occurred owing to the turning on of the burner valve and allowing considerable qlpantity of gas to escape before turning on t e ilot valve.

T e objects of this invention are: first, to provide in a structure having a gas burner and a pilot burner an improved structure and arrangement of valves in which it is impossible for the main or burner valve to be opened pilot valvehas been opened. Secnd, to provide in such a structure pilot and burner valves which co-act and serve as stops for limiting movement of each other. Third, to provide a structure of the class described in which it is impossible to close the pilot valve until the main or burner valve is fully opened. Fourth, to provide a structure of the class described which is very economical to produce and at the same time very eifectvive for the purpose and durable in use.

Further objects, and objects relatingto structural detail will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.- The invention is clearly defined and pointed out in the claims. I A structure embodying the features of my invention is clearly illustrated in the accompanying drawings forming a part of this specification, in which,

Figure 1 is a detail elevation of the structure embodying the features of my invention, the casing A of the burner-being shown in vertical section; the open position of the valves being indicated by dotted lines. Fig. 2 is a detail plan of the structure appearing in Fig. 1, the burner a being omitted. Fig: 3 1s a detail side elevation showing the burner and the ilot valves in their open position the pilot va ve being indicated in its closedposition by the dotted lines. Fig. 4 is an enlarged section through the stop block 0 of the ilot valve, the yielding stop pin 0, the screws 0 and the spring 0 being shown in full lines.

Specification of Letters Patent.

Application filed June 27, 1906. Serial No. 323,587.

Patented May 19, 1908.

In the drawings similar letters of reference refer to similar parts throughout the several views.

Referring to the drawing, A-represents the base of the casing in which the burner a, is supported, and A the wall of the casing.

D is the gas supply pipe. The gas supply pipe is provided with, a valve consisting of a sultable casing'B and valve lug B, on the stem of which. is a handle or "inger piece B.

The pilot valve casing C is mounted upon the burner valve casing 13 and is referably cast integral therewith. The I 0t 0" is arranged through the 035111 1 at a point near the main burner. The pilot valve C is provided with a suitable finger piece C.

\Vith the parts thus arranged the stop block 0 on the pilot valve serves as a stop limit to the movement of the main burner valve, the same. being engaged by the projecting stops D D on the stop plate D; see Figs. 1 and 3. The stop plate'D serves as astop to limit the movement of the pilot valve, its open position bein indicated by dotted lines in Fig. 1 and lts'closed position being indicated by the dotted lines in Fig. 3, in which position the stop pin 0 engages the notch d in the stop plate. When the valves are in their closed position, as shown in Fig. 1, the pin 0' engages in the notch d of plate D, thereby preventing the opening of the main valve until the pilot valve is opened. WVith the main valve partly open, it is impossible to close the pilot valve as the stop block thereon is engaged by the edge of the stop plate. This arrangement prevents the opening of the main valve until after the, pilot valve is fully opened and also prevents the closing of the .pilot valve until the main valve is fullyopened. It also avoids the necessity ofan additional stops for the valves, which is of a vantage in the manufacture, as it simplifies the casting and also enables the grinding of the valves into their seats as they can be turned therein.

Further advantages'will readily appear to those s'killed in the art' to which this invention relates. I

I have illustrated and described my .improvements in the form preferred by --me although I. am aware that they are ca able of considerable variationin structural etail without departing from my invention.

Having t us described my invention, what I claim as new and desire to secure by Letters Patent 1. The combination with a gas burner and a ilot light, of a -valve for said burner; a va v e for said pilot li ht; astop block on said pilot valve a yiel ing in carried thereby; a spr ng arranged to ho (1 said pin yields mgly outward; and a-st op plate onv said to ermit the opening burner valve arranged to coact with said stop block, said stop plate having outwardlyprojecting sto s at the ends thereof adapted to engage sai stop block to limit t e movement of said burner valve, and notches in its edges adapted to receive said stop block to permit the opening or closing of said pilot valve only w en said burner valve is in-it's closed or 111 its fully opened osition, said in carried by said stop block, eing adapte to yield to ermit the closing of said burner valve while the'pilot valve isclosed and to' automatically engage said stop plate when the burner .valve is ,closed'and retain it in its closed position until disengaged by ing of the pilot valve.

-2. Thelcombination with 'a gas burner and a ilot light, of a valve for said burner; a val ve for said pilot li ht; a stop block on said pilot valve; a yiel ing in carried thereby; a spring arranged to ho d said'pin yieldingly outward; and a stop plate on said burner valve arranged to coact with said stop block, said stop plat' havin notches in its edges adapted to receive sai stop block orgclosing or said pilot va ve only when sai burner valve is in,its closed or m its fully o efied osition, said in carried by said stop lockf eing adapte to yield to ermit the closing of said burner valve w e the pilot valve is closed and to automatically engage said stop plate when the openthe burner valve is olosed'and ret'ainit iniits I closed position until disengaged by the opening of the pilot valve,

3. The cornbinatlon with a gas burner and a pilot light, of avalveforsaid burner; avalve for said pilot li ht; a stop block on said pilot valve provide with a y eldinlg portion; and

a stop plate on said burner va ve arrangedtd coact with said. stop' block, said stop plate having outwardly-projecting stops at the ends thereof, adapted to enga e said stop block to limit the movement 0 said burner valve, and notches in its edges adapted to receive said stop block to ermit the ope or closing of said pilot va ve only when sai burner valve is m itsclosed-or in itsfully.

opened position, said yielding portion of said stop block being ada ted 'to permit the closing of said burner va ve while the pilot valve is closed and to automatically engage said sto plate when the burner valve isclosed an retain it inits closed position' until disengaged by the opening of the pilot valve;

4. The combination with a gas burner and a ilot light, of a valve for said burner;v a va ve forsaid said pilot valve provided with a yielding portion; and a stop plate on said arran edto coact with said stop block, said stopp ate having notches in its e ges adapted to receive said stop block to permit the openin or closing of said pilot valve only when said burner valve is in 1ts closed or in its-fully opened position, said yielding portion of'said stop block being adapted to permit the closing of said ,bumer va ve while the pilot valve is closed and to automatically engage said pilot light; a stop block on.

.75 urner valve.

sto plate when the burner valve isjc-losed,

an retain it in its closed position unti'l dis en aged'by the opening of the pilot=valve.j:-

n witness whereof, I have hereunto set my hand and seal in the presence of two wit- 'LULU G; GREEnFmLD, OTIS A. EA L. 

